SA09273SC
Installation of Terra by Trimble TMA 350D audio control panel with integrated marker beacon receiver and intercom system, Terra by Trimble TX 760D VHF communications transceiver,and Terra by Trimble TRT 250D transponder. Held by Freeflight Systems, which holds 20 approved modifications in all. Last revised December 21, 2001. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company
- Models
- 170B
- Type certificate
- A-799
- On this site
- Cessna 170 2,085 registered
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 20, 2026.